Hybrid Car – More Fun with Less Gas

pex vs copper - Page 6

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Posted by Q on October 31, 2005, 2:03 am
 
andre.julien@sympatico.ca wrote in news:1127160345.924080.187520
@g44g2000cwa.googlegroups.com:


Excellent conclusion!!

Mark
Gulf Coast Solar, Inc.
www.gulfcoastsolarinc.com

Posted by Q on October 31, 2005, 2:01 am
 
andre.julien@sympatico.ca wrote in news:1126216808.955421.122960
@g43g2000cwa.googlegroups.com:


No, you can't use PEX in the collector because it doesn't tolerate
exposure to sunlight, UV, etc...  The high collector temperatures will
also push you off of the Temperature-Pressure rating table for PEX even
if it didn't have sunlight problems.

PEX is great to use in inside drainback plumbing, but it can't go
outside.  

You can try to build your own collector, but you will be far better off
to just buy one from SunEarth, AET, etc...  They have the coatings and
material selections completely solved after 20-30 years doing it.

Mark
Gulf Coast Solar, Inc.
www.gulfcoastsolarinc.com

Posted by Solar Flare on October 31, 2005, 2:31 am
 But can anybody afford a rooftop full of bought panels?
With $00 per year saved I would have to live a long time to pay this back.

PEX is usually reated about 80PSI at 180F. I wouldn't think I would come close
to these pressures with a self contained loop pump (2-5 PSI max.). I guess at
city or house presure it could be a problem. The UV thing is a good reminder
though.

 Thanx.



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